Water-heating apparatus.



No. 788,890. PATENTED MAY 2, 1905. V1?. A. DBASY.

WATER HEATING APPARATUS.

APPLIOATION FILED APR.4,1904.

llfAI WHA/5555.-

W10@ h a TES Patented May 2, 1905.

Parar price.

PIETER A. DEASY, OF OAKLAND, CALIFORNIA. ASSICNOR TO THE DEASY WATERHEATER COMPANY, OF OAKLAND, CALIFORNIA.

WATER-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 788,890, dated May 2,1905.

Application filed April 4, 1904. Serial No. 201,601.

To (all Ui/wm if; may concern: i

Be it known that I, PETER A DEASY, a citizen of the United States,residing at Oakland, in the county of Alameda and State of Cali fornia,have invented certain new and useful Improvements in l/Vater-HeatingApparatus, of which the following' is a specification.

My invention relates to improvements in water-heating apparatus, theobject of the in- IO vention being to provide an improved apparatus ofthis character which can be substituted for the ordinary kitchen-boilerand in which the water can be heated either bymeans of the water-back inthe kitchen-range or by means of a separate gas-heater, as may bedesired. In devising waterheaters of this character the object is toprovide a construction by which a sufficient volume or proportion of thewhole quantity of water in the boiler shall be brought as quickly aspossible to a sufficiently high temperature for ordinary domesticpurposes. With certain constructions of such water-heaters a smallquantity of water may be quickly broughtalmost to boilingpoint by usinga sufliciently large amount of gas or other heating medium; but this isundesirable. It is preferable that a much larger quantity of watershould be brought in avery short time to a temperature much less thanthat of boiling, but suflicient for ordinary domestic purposes. It isthe object of my invention to accomplish this result. This l effect byproviding a rapid circulation of a comparatively large quantity ofwater. By this means the greater part of the water in the boiler isbrought to a high temperature very quickly. Again, it has been foundthat when a gas-heater is used to heat water in a kitchen-boiler thereis considerable condensation of moisture upon the surface of the boiler,so much, in fact, that the moisture collects, runs down, and drops onthe floor. This condensation is of course that of the water which ispart of the product of combustion of the gas.

A further object of my invention is to pro vide a construction ofkitchen-boiler which will prevent this dropping of moisture socondensed, and an incidental advantage of this Y the burner.

construction is that a greater heating-surface is provided for theboiler.

A further object of my invention is to provide an improved gas-heaterfor use in connection with such a boiler.

My invention therefore resides in the novel construction, combination,and ar `angement of parts for the above ends hereinafter fullyspecified, and particularly pointed, out in the claims. y

In the accompanying drawings, Figure l is a side View of the apparatus.the boiler being shown in vertical section. Fig. Q is a broken plan viewof one of the short tubes. Fig. 3 is a broken siderview of two of theshort tubes disconnected. Fig. 4: is a plan view of Fig. 5 is a verticalsection of the 65 burner-tubelileferring to the drawings, lA representsa kitchen-boiler supported upon a stand 2. This boiler is in form thatof a double cylinder, so that it has a central vertical flue, the waterbeingcontained between the outer cylindrical wall 2 and the inner wall3. The inner wall 3 has a vertical series of separate or independentcircular horizontal corrugations 4. The advantage of this constructionis twofold: First, any moisture which is deposited by condensation uponsaid inner wall does not run so freely down the wall, its progress beingchecked by the corrugations. It is therefore subjected to greater heatand is consequently evaporated before it can drop onto the licor.Secondly, said inner wall is of greater area, and thus provides agreater extent of heating-surface for the boiler.

5 represents the cold-water-supply pipe 85 leading' into the boiler andopening' near the bottom thereof, and (i represents the hot-water pipeleading' from the top of the boiler'.

7 represents a cook stove or range having the usual water-back, (notshowm) with the 9@V lower pipe 8 leading from the bottom of the boilerto said water-back and the upper pipe 9 leading from the top of thewater-baek to a higher point in the boiler.

1l represents a gas-heater having a burner 95 1Q, the products ofcombustion from which ascend through the iiueformed within the innerwall 3 of the annular boiler. In the lower portion of said iiue areprovided a series of short tubes 13, screwed into one another' in avertical series, each tube having short radiating arms 14. This seriesof short tubes, Vforming a water-conduit with an expanded area, extendsto a point somewhat below the middle of the boiler and aboutopposite tothe entrance of the uplift-pipe 9 from the waterback. Exactly oppositeto said entrance is connected with the boiler', through the inner wall3, the lower end of a coil of pipe 15, which extends to the top of theboiler and is connected above said top with a T-piece 16, the centralmember of which is connected with a vertical pipe 17, connected at thebottom with the uppermost of the short tubes 13. The opposite end of theT-piece is connected with the hot-water pipe 6, leading from the boiler.

A short pipe 19 leads from the bottom of the boiler, and is providedwith a faucet 2O for drawing off and is connected to the lowest of theshort tubes 13 by a branch connection 21.

By means of this construction there are provided two distinct systems ofcirculation of the boiler-one up through the short tubes 13 and thecentral pipe 17, then down the interior of the boiler and through theshort pipe 19 and branch connection 21 to the bottom of the series oftubes 13, and the other up through the coil 15, across the T-piece 16,and down the interior of the boiler to the lowest point of the coil 15.By reason of this construction the water in the boiler is maintained ata substantially uniform temperature, which increases rapidly to the'temperature desired. Instead of obtaining a small quantity of water ator near the boilingpoint there is obtained in the same time a muchlarger quantity of water at a temperature lower than that ofboiling-point, but su flicient for domestic purposes. By actual test,comparing the present construction with one in which there is acontinuous single conduit through the flue, I have found that with asingle circulation, using twenty three and nine-tenths feet of gas,water was heated uniformly to a temperature of 205O in thirtyfiveminutes, but with the double circulation, using the same quantity ofgas, the water was heated uniformly to a temperature of 183O in nineteenminutes. This latter temperature is quite sufficient for ordinarydomestic purposes and is obtained in a much quicker time with the samequantity of gas than can a uniform high temperature be obtained underthe other system.

rI he gas for the gas-burner passes through a tapering nozzle 22, whichis inserted in the lower tapering end of a tube 23 in front of acontracted throat 24, the space between the nozzle and the lower end ofthe tube being an air-space for drawing in the air to mix with the gas.The inner surface of the air-tube is formed with a spiral rib 25, asshown. I have found that this construction of contracted throat andspiral rib prevents the iiames igniting back along the tube.

I claim- 1. In an apparatus of the character described, the combinationof a boiler having a central iiue therethrough, a burner discharginginto said flue, a water-conduit having an expanded area in the lowerportion of the flue and connected at its lower end with the bottom ofthe boiler, a straight pipe leading from the upper portion of saidconduit and connected with the top of the boiler, and asecondindependent conduit in said iue above said first vconduit having anexpanded area exposed to the action of the heat of the flue connected atits lower end with a lower portion of the boiler and at its upper endwith the upper portion of the boiler, substantially as described.

2. In an apparatus of the character described, the combination of aboiler having a central flue therethrough, a burner discharging theproducts of combustion into said flue, a water-conduit in the lowerportion of the flue, asecond independent water-conduitin the upperportion of the flue, and connections from each conduit from the upperportions thereof to the upper portion of the boiler and from thelower-portions Vthereof to lower portions of the boiler, substantiallyas described.

3. In an apparatus of the character described, the combination of aboiler having a central fiue, a burner discharging the products ofcombustion into said iiue, a water-conduit having radiating arms in thelower portion of the iiue to form an expanded water area exposed to theaction of the heat, and a pipe leading from said conduit to the top ofthe boiler, a second conduit comprising a coil of pipe surrounding saidfirst pipe, and connections from said conduits from the tops thereof toan upper portion of the boiler and from the bottoms thereof to bottomportions, substantially as described.

4. In an apparatus of the character described, the combination of aboiler having a central flue, a burner discharging the products ofcombustion into said iiue, a conduit comprising a series of radiatingarms in the lower portion of the flue, and a pipe leading upwardtherefrom to the top of the boiler, and a second conduit consisting of acoil of pipe around the first pipe and leading to the top of the boiler,the lower end of the first conduit being connected with the bottom ofthe boiler, and the lower end of the coil with the boiler at a pointopposite to said end, substantially as described.

5. [n an apparatus of the character described, the combination of aboiler having a central flue, a burner discharging the products ofcombustion into said I'iue, a conduit IOO IIS

comprising a series of radiating arms in the thereto from the bottom ofthe boiler end 'from lower portion of the flue, and a pipe leadingq thepoint opposite to the bottom of the coil, upward therefrom to the top ofthe boiler, e substantially as described. Second conduit consisting' ofa coil of pipe In witness whereof I have hereunto Setmy 5 around theiirst pipe and leading to the top of hand in the presence ol'l twosubscribing wit- I5 the boiler, the lower end of the first conduitmesses.

beingeonneeted with the bottom of the boiler, PETER A. DEASY. and thelower end of the ooil with the boiler Titrlessesl i at a point oppositeto seid end, a stove or FRANCIS M. WRIGHT,

BESSIE GORFINKEL.

O range having a Water-beck, and pipes leading

